Methods and apparatus for composing an identification number

Details Methods and apparatus for composing an identification number Methods and apparatus for composing an identification number

2007-09-11

2007-09-11

Zand, Kambiz (Department: 2132)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

Tamper resistant

C713S502000, C710S028000

Reexamination Certificate

active

10245946

ABSTRACT:
Methods and apparatus for producing an electronic ID number include modifying at least one physical bit element from among each of at least first and second groups of physical bit elements, each physical bit element of each group having a first physical state in which it is operable to produce a signal having a first electrical state, and being capable of permanent modification to a second physical state in which it is operable to produce a signal having a second electrical state; and producing (i) one bit of an identification (ID) number from the respective signals issuing from each of the respective at least first and second groups of physical bit elements, and (ii) a validity signal indicative of whether the one bit of the ID number is valid.

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